The Brief A 31-year-old man was shot during a road rage incident on the Vine Street Expressway. A road rage encounter on the Vine Street Expressway escalated into violence, leaving a 31-year-old man with a gunshot wound to the leg. Expressway shootingWhat we know:The shooting happened on the Vine Street Expressway, also known as Route 676, when a road rage incident escalated around 10 p.m. Saturday night. Ongoing questions for authoritiesWhat they're saying:"With respect to the incident, looks like it originated on the Philadelphia side on the Vine Street Expressway," the Delaware River Port Authority confirmed. What we don't know:The exact details of the road rage incident and the identity of the shooter remain unclear.